直播视频网站源码，登录界面LoginActivity

```handlebars
public void onSuccess(String content) {
//if(content.indexOf(tempname)!=0&&content.indexOf(tempname)!=-1){
//System.out.println(content.indexOf(tempname));
//System.out.println(content);
System.out.println("内容为"+content);
if(!content.trim().equals("[]")) {
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
LoginActivity.this.startActivity(intent);
}
//}
}
```

```handlebars
//创建数据库操作对象调用数据库对象方法
LoginDao loginDao=new LoginDao();


List<Map<String,Object>> list=loginDao.findByParams(findName);

//转化为JSON字符串
String msg=JSON.toJSONString(list);
//用流输出
PrintWriter out=response.getWriter();
out.println(msg);
out.close();
```

```handlebars
public List<Map<String,Object>> findByParams(String user_name){
List<Map<String,Object>> list=null;
String sql="select * from tree where username='"+user_name+"'";

try {
conn=DbConnector.getConnection();
qr=new QueryRunner();
list =qr.query(conn,sql,new MapListHandler());//链接，sql，容器，占位符?的值
} catch (SQLException e) {
e.printStackTrace();
}finally {
DbConnector.close(conn);
}
return list;
}


}
```